Natural Burmese sapphire and diamond ring, circa 1950.

Burmese sapphire and diamond ring. Set with a cushion shape double brilliant natural unenhanced Burmese sapphire in an open back four claw setting with an approximate weight of 5.09 carats, flanked by eight round single cut diamonds in open back grain settings with a combined approximate weight of 0.08 carats, to an elegant pierced collet with split claws, fancy backholing and gently sloping shoulders leading through to a solid D-shape shank. Tested platinum, English, circa 1950, accompanied by Gemmological Certification Services report #5776-4337.